/*******************************************************************************
 * Software Name : RCS IMS Stack
 *
 * Copyright (C) 2010 France Telecom S.A.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.gsma.rcs.core.ims.protocol.msrp;

import java.io.ByteArrayOutputStream;

/**
 * Data chunks
 * 
 * @author jexa7410
 */
public class DataChunks {
    /**
     * Current transfered size in bytes
     */
    private int currentSize = 0;

    /**
     * Cache used to save data chunks
     */
    private ByteArrayOutputStream cache = new ByteArrayOutputStream();

    /**
     * Constructor
     */
    public DataChunks() {
    }

    /**
     * Add a new chunk
     * 
     * @param data Data chunk
     */
    public void addChunk(byte[] data) {
        cache.write(data, 0, data.length);
        currentSize += data.length;
    }

    /**
     * Get received data
     * 
     * @return Byte array
     */
    public byte[] getReceivedData() {
        return cache.toByteArray();
    }

    /**
     * Reset the cache
     */
    public void resetCache() {
        cache.reset();
    }

    /**
     * Returns the current size of the received chunks
     * 
     * @return Size in bytes
     */
    public int getCurrentSize() {
        return currentSize;
    }
}
